Garuda - Garba Rujukan Digital

ANALISIS PELAKSANAAN PRAKTIK KERJA INDUSTRI SISWA PROGRAM KEAHLIAN TEKNIK MESIN DI SMK NEGERI 2 SURAKARTA Permatasari, Dini Putri
Jurnal Nosel Vol 4, No 1 (2015): July
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The objectives of this research are to investigate: (1) the description of school conditions in implementing the industrial apprenticeship; (2) the preparation done by the school in implementing the industrial apprenticeship; (3) the quality of the implementation of the industrial apprenticeship; (4) the factors that support the implementation of the industrial apprenticeship; and (5) the benefits of the industrial apprenticeship.The research employed the descriptive evaluative research method with the Context, Input, Process, and Product (CIPP) model. The samples of research were taken by using the purposive sampling technique. They included 18 teachers of the Study Program of Mechanical Engineering, 95 students in Grade XII of the Study Program of Mechanical Engineering, and 3 industries. The data of research were collected through questionnaire and documentation. The items of questionnaire were validated by using the logic validity. They were analyzed by using the average score counted analysis model.The results of research are as follows: (1) State Vocational High School 2 of Surakarta is very well-conditioned in preparing the industrial work practice; (2) the preparation done by the school in implementing the industrial apprenticeship is already very good; (3) the quality of the implementation of the industrial apprenticeship of the school is very good; (4) the factors that support the implementation of the industrial apprenticeship include 19 factors, namely: vision of industrial apprenticeship, missions of industrial apprenticeship, students? condition, their parents? condition, the teachers? condition, objective of industrial apprenticeship, school preparation, facility and infrastructure preparation, facility and infrastructure utilization, students? activities, teachers? activities, business/industry involvement, administration implementation, control toward the violation done by the students, implementation of industrial apprenticeship evaluation, students? skills, students? experiences, students? personalities, and students? satisfaction; and (5) the benefits of the industrial apprenticeship consist of five namely: improvement of the educational quality of the school, improvement of the students? practical skills, addition of the students? practical experiences, improvement of the students? personalities, and increase of students? satisfactions of the industrial apprenticeship.

PENGGUNAAN CDI DIGITAL HYPER BAND DAN PEMAKAIAN CAMPURAN PREMIUMDENGAN CAMPHOR TERHADAP EMISI GAS BUANG PADA SEPEDA MOTORYAMAHA JUPITER MX TAHUN 2012 Erdianto, Rahmat
Jurnal Nosel Vol 1, No 4 (2013): April
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The purpose of this research is to know the influence of the use of CDI digital hyper band and find out the influence of the addition of camphor in premium against the levels of pollutant gases (CO and HC) on motorcycles Yamaha Jupiter MX in 2012. This research was conducted in the laboratory of Motorcycle JPTK PTM Course FKIP University Campus March Eleven V Barnsley. This research uses experimental methods to find out the exhaust emissions from each treatment experiment. The object in this study using motorcycles Yamaha Jupiter MX in 2012. Technique of data analysis in this study uses descriptive data analysis observing directly the results of experiments and then analyzed and concluded the results of the research. Results of the study are as follows: 1) Replacement CDI digital hyper band will always be put outside content of exhaust emissions of CO are smaller than using CDI standards. HC exhaust emissions standard on the use of CDI and CDI digital hyper band has a little difference on premium pure and mixed at 20 grams of camphor, but on a mix of 10 grams of camphor and 30 grams per liter of premium has a hefty difference to the use of CDI standards. Replacement CDI digital hyper band and CDI standard does not have a major impact on the exhaust emissions of CO and HC. 2) CO Content from the average pure premium, the addition of 10 g, 20 g and 30 g of camphor on each liter of premium decreased emissions, using either standard or CDI CDI digital hyper band. HC exhaust emissions shows the changes up and down in the mixture of camphor every grams that are different between using CDI standards as well as CDI digital hyper band.

PENGARUH RASIO KOMPRESI TERHADAP EMISI GAS BUANG CO DAN HC DENGAN BAHAN BAKAR LIQUEFIED PETROLEUM GAS PADA SEPEDA MOTOR YAMAHA JUPITER Z 110 CC Indrawan, Ifnu Taufik
Jurnal Nosel Vol 3, No 2 (2014): October
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The objective of this research are: (1) To investigate the effects of compression ratio to CO and HC emissions of exhaust gas by using liquefied petroleum gas as fuel on Yamaha Jupiter Z 110 cc motorcycle. (2) To investigate the lowest amount of CO and HC emissions of exhaust gas on Yamaha jupiter Z 110 cc motorcycle using liquefied petroleum gas as fuel after varying its compression ratio. The method used in this research was an experimental method. The research was conducted at the Laboratory of Automotive Mechanical Engineering Education Program JPTK FKIP UNS located at Ahmad Yani street no. 200 Kartasura, Surakarta phone (0271)718419 Fax. (0271)729928. The tools used to measure the amount of CO and HC emission of exhaust gas was gas analyzer type 898 OTC Stargas Global Diagnostic. The population in this research was a Yamaha Jupiter Z 110 cc motorcycle and the sample of this research was a Yamaha Jupiter Z 110 cc motorcycle with 2P2675042 engine number that used the conversion sets such as a modified carburetor and liquefied petroleum gas as fuel. The amount of CO and HC emission of exhaust gas measurement based on SNI 09-7118.3-2005 test method which organized the measurement of L category vehicle on idle condition. The data analysis technique used in this research was descriptive investigation method. The descriptive investigation method used was comparative study. The data were obtained from the measurement result documentation of the exhaust gas emission of CO and HC by applied three different compression ratio that were 8.6 : 1 (low), 9.3 : 1 (standart) and 10 : 1 (high). Based on the result of this research, it can be concluded that: (1) The higher compression ratio of the engine caused the higher combustion chamber pressure and temperature at the end of compression stroke. The characteristic of liquefied petroleum gas that have high octane rating about 110 RON and lower flammability limit about 460?C need the high pressure and temperature before finally burned at the moment when ignition timing started. So that the high compression ratio will caused more effective combustion processes on the engine that used liquefied petroleum gas as fuel. (2) The amount of CO emission of exhaust gas produced on Yamaha Jupiter Z 110 cc motorcycle by using liquefied petroleum gas as fuel at 8.6 : 1 (low) compression ratio was 0.135 %, at 9.3 : 1 (standart) compression ratio was 0.037 % and at 10 : 1 (high) compression ratio was 0.026 %. Then the amount of HC emission of exhaust gas produced on Yamaha Jupiter Z 110 cc motorcycle by using liquefied petroleum gas as fuel at 8.6 : 1 (low) compression ratio was 1533 ppm, at 9.3 : 1 (standart) compression ratio was 1270 ppm and at 10 : 1 (high) compression ratio was 820 ppm. The measurement result data showed that the lowest amount of CO and HC emission of exhaust gas produced on Yamaha Jupiter Z 110 cc motorcycle by using liquefied petroleum gas as fuel was at 10 : 1 (high) compression ratio that was 0.026 % for CO and 820 ppm for HC.

PENGARUH VARIASI TEMPERATUR DAN HOLDING TIME DENGAN MEDIA QUENCHING OLI MESRAN SAE 40 TERHADAP STRUKTUR MIKRO DAN KEKERASAN BAJA ASSAB 760 Bangsawan, Ihsan Gata
Jurnal Nosel Vol 1, No 2 (2012): October
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The purpose of this study was (1) Determine the influence of temperature variation with quenching media Mesran SAE 40 oil to microstructure and hardness of carbon steel ASSAB 760, (2) Knowing the effect of holding time variation with quenching media Mesran SAE 40 oil to microstructure and hardness of carbon steel ASSAB 760, (3) Knowing the interaction of temperature variation and holding time variation with quenching media Mesran SAE 40 oil to microstructure and hardness of carbon steel ASSAB 760. This research uses experimental methods. Objects in this study is ASSAB 760 medium carbon steel, the product of the Associated Swedish Steels AB (Assab Steels) Stockholm, Sweden, with the chemical content of 0.50% C, 0.60% Mn, 0.30% Si and 0.04 S %. Data analysis techniques in this study using descriptive data analysis results graphically illustrate the tables, histograms, graphics, and images of microstructures. As an input parameter in analyzing the data include: temperature variation (800 °C, 840 °C, and 880 °C), holding time variation(15 minutes, 25 minutes, and 35 minutes), microstructure, and hardness. The results showed a change in the level of hardness and the microstructure formed. From the hardness test results obtained the highest level of hardness in the specimen temperature 800 °C with holding time of 35 minutes 27.66 HRC consecutive lows towards the specimen temperature of 840 °C with holding time 35 min and temperature of specimens 880 °C with holding time of 35 minutes 24.33 HRC, 840 °C specimen temperature and holding time 25 minutes at 24 HRC, the specimen temperature of 880 °C with holding time of 25 minutes 23.33 HRC, specimen temperature of 840 °C with holding time of 15 minutes 22.33 HRC, the specimen temperature 800 °C with holding time 25 minutes at 22 HRC, the specimen temperature of 880 °C with holding time of 15 minutes 21.33 HRC, specimen temperature of 800 °C with holding time of 15 minutes 19.33 HRC, and the lowest rate is specimens of raw material 8 HRC . Microstructure test shows microstructure of raw materials consists of ferrite and pearlite with impartial large crystals form and in accordance with the carbon content of 0.50 % and in the group of the hardening specimens with quenching media Mesran SAE 40 oil, new microstructure is obtained martensite is the main structure in increasing steel hardness . From the research it can be concluded that the variation of temperature and holding time variation with quenching media Mesran SAE 40 oil can change the microstructure and increases hardness of steel ASSAB 760 with the highest hardness value of the specimen temperature of 800 °C with holding time of 35 minutes 27.66 HRC.

ANALISIS PENERAPAN SISTEM MANAJEMEN KESEHATAN DAN KESELAMATAN KERJA DI BENGKEL OTOMOTIF SEKOLAH MENENGAH KEJURUAN SE-KOTA SURAKARTA Suryanto, Rochmad Endra
Jurnal Nosel Vol 3, No 4 (2015): April
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The purposes of this research are: (1) To determine the commitment and policy of occupational health and safety management system in automotive workshop vocational high schools Surakarta city. (2) To determine the ability guarantees of occupational health and safety management system in automotive workshop vocational high schools Surakarta city. (3) To determine the implementation of occupational health and safety management system in automotive workshop vocational high schools Surakarta city. (4) To determine the results of the implementation of occupational health and safety management system in automotive workshop vocational high schools Surakarta city. This research was an evaluation model of CIPP. Forms and strategies used descriptive with qualitative data supported the quantitative data. Sampling techniques used purposive sampling with 217 respondents. Data collection used interviews, observation, documentary studies and questionnaires. Data analysis for qualitative data used interactive model, while quantitative data used the assessment criteria. The results of this research indicated that Context: (1) There were not a specific organization or personnel who managed and supervise the implementation of occupational health and safety in automotive workshop vocational high schools. (2) There were not detail jobdesk in regulating occupational health and safety in automotive workshop vocational high schools. Input: (1) There were not integrate system of workshops with school administrators in the implementation of occupational health and safety in automotive workshop vocational high schools. (2) There were not personnel or teachers who trained and has capability on occupational health and safety in automotive workshop vocational high schools. (3) Means of support infrastructure have meets the standards Permendiknas No. 40 of 2008 with a percentage of 80,6%. (4) Means of support infrastructure based on the results of questionnaires include the very high category with a percentage of 68,2%. Process: (1) The use of facilities and infrastructure to the maximum include the high category indicated by a percentage of 59,9%. (2) Motivation and students awareness of the occupational health and safety, include the high category indicated by a percentage of 68,2%. (3) Occupational health and safety competencies for students have been included in the basic subjects of mechanical engineering, while occupational health and safety training for teachers and students has never been implemented. Product: Implementation of occupational health and safety in automotive workshop vocational high schools include in the high category indicated by a percentage of 82,5%.

DEVELOPMENT OF INFORMATION SYSTEM ACCREDITATION FORMS BASED ON WEB IN MECHANICAL ENGINEERING EDUCATION PROGRAM OF JPTK FKIP UNS Romas, MH. Fahd Al Aliem
Jurnal Nosel Vol 4, No 1 (2015): July
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The purposes of this research are to develop the Systems Information Accreditation Forms are good for Mechanical Engineering Education Program (PTM) JPTK FKIP UNS so thus it could collect, analyze, and present the information that is required in the preparation of the accreditation forms and then it could be accessed easily and quickly, relevant, accurate, and have a positive results for accreditation.This is a research and development that was held at the Campus V Pabelan FKIP SebelasMaret University. The source of data derived from graduation portal, lecturer portal, personnel information systems of UNS and UNS information system and also Information System Accreditation Forms itself. Information system development conducted with the procedures of data collection and supporting data analysis through observation, interviews and direct recording continued with validation of design, implementation and testing of products on a small scale. For the implementation and testing by information system has 91.9 in average result. Average result by specialists in substance was 94.8 and 90 in accreditation forms substantion.This results of this research indicated that this information system is developed with good results and can provided the required data in the preparation of the accreditation forms that could be easily access, quick, relevant, and accurate. This information system could be accessed with a WLAN (Wide Area Network) by internet with minimal interference access by means of urlhttp://ptm.fkip.uns.ac.id/borang. The data in information systems accreditation forms saved in the database and could be accessed without any significantly interference.

ANALISIS CACAT PRODUK BAN VULKANISIR JENIS TRUK DAN BUS PADA CV. SIGMA JAYA SURAKARTA Sunanto, Agus
Jurnal Nosel Vol 1, No 4 (2013): April
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This study aims to reveal the extent of the technical problems faced by CV. Sigma Jaya Surakarta in order to improve product quality retread tires. The technical problems in terms of the types of defects and their causes tires. This research method is descriptive qualitative. The results of this study indicate that the production of tires every month is 600 tire retreading, with 479 and 121 tires are not defective tire defects. Types of defects in the tire retreading Trucks and Buses frequent such as Crack Buster (CB), ie 4.50% of the total production, 27 tires, and sidewall Crack (CS) 3.83% by the number 23 tires, Dirty Mould (DM ) 3.66% by the number 22 tires, Blown Tread (BT) 3% with the number 18 tires, Under Cure Tread (UCT) 2.66% by the number 16 tires, Internal Failure (IF) ranks last with a percentage of the tire defect little going on as much as 2.50% by the number of 15 tires. By this research known by its cause there is water on printed, patronising pressure (shaping) while is printed downwards, hole wears hair short jammed tire, subtracted ripe time, position vent hole /hole wears hair short reducing tire a lot of, insufficiently notices hygiene, cleansing of casting with the wind adverse, inauspicious settlement, and gross floor.

UPAYA MENINGKATKAN MOTIVASI BELAJAR DAN HASIL PRAKTIK MESIN BUBUT MELALUI PERANCANGAN WORK PREPARATION SISWA KELAS XI PEMESINAN SMK PGRI 1 SURAKARTA TAHUN PELAJARAN 2014/2015 Sudarsono, Rahmad Yari
Jurnal Nosel Vol 4, No 3 (2016): January
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The aim of this research is improving learning motivation and the result in practice learning at machining practice lesson of students at class XI M2 Vocational High School PGRI 1 Surakarta in academic year 2014/2015. The effort is applied design of work preparation by the students. This research is classroom action research. This research conducted on two cycles with four phases, includes: planning; doing; assessment; and reflection. The subject of this research is all of student class XI M2 Vocational High School PGRI 1 Surakarta in academic year 2014/2015 as many as 24 students. This research did by collaboration between researcher, teacher and students. The data of research were collected through observation, documentation, interview and test. The instrument validated with content, questionnaire and test validity, using expert judgment technique. Data analyzed by comparative descriptive analysis and critical analysis. The result show that the design of work preparation could improve the learning motivation and the result of lathe machine practice. In cycle I, the percentage attainment of student learning motivation is 71,8% and the average of the student practice record is 74,79 with the percentage of students to get score upper of minimum learning completeness criterion is 70,83%. In cycle II, the percentange attainment of student learning motivation is 85,14% with the average is 84,07 with the percentage of students to get score upper of minimum learning completeness criterion is 100%.

PENERAPAN MODEL PEMBELAJARAN QUANTUM UNTUK MENINGKATKAN MOTIVASI BELAJAR DAN PRESTASI BELAJAR GAMBAR TEKNIK SISWA KELAS X O1 SMK NEGERI NGARGOYOSO TAHUN AJARAN 2014/2015 Fantara, Hari Kapri Teguh
Jurnal Nosel Vol 4, No 2 (2015): October
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The objectives of this research are to get the successfulness: (1) in the improvement of the learning achievement by implementing of Quantum learning model using computer media in class X O1 SMK Negeri Ngargoyoso in academic year 2014/2015; and (2) in the improvement of the student?s motivation at the application of Quantum learning model using computer media class X O1 SMK Negeri Ngargoyoso in academic year 2014/2015. This research is a classroom action research. It has held in two cycles, which each cycle consisted of four phases, namely: planning, implementation, observation, and reflection. The research subject was the students of X O1 SMK Negeri Ngargoyoso. Data were collected through questionnaire of study motivation and written test. They were validated through construct validity for study motivation variable and content validity for achievement variable. The research shows that the implementation of Quantum learning using computer media could improve student?s motivation and engineering drawings achievement of class X O1 SMK Negeri Ngargoyoso. It can be seen from improvement percentage of student?s motivation in the first cycle reaches out 61,29% in good category, they are 19 students, became 83,87% in good category from all students, they are 26 students. The improvement of achievement can be seen from first condition reaches out 60%, in the first cycle reaches out 51,61% with average 66, became 83,87% with average 80,6 in the second cycle.

PENGARUH KECEPATAN PEMAKANAN DAN KADAR AIR TERHADAP KEKASARAN PERMUKAAN PADA PROSES MILLING CNC 3 AXIS DENGAN MATERIAL KAYU JATI Hermawan, Arif Budi
Jurnal Nosel Vol 1, No 1 (2012): July
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There are many factors influencing the quality of products that are produced from wood machinery. Those influencing factors are the feedrate and moisture content.The results of this research was: (1) Reduction of feedrate of 3 axis CNC milling process with teak wood material, would be resulted the smllest surface roughness. (2) Reduction of moisture content of 3 axis CNC milling process with teak wood material, would be resulted the smallest surface roughness. (3) The surface roughness of 3 axis CNC milling processes with feedrate variation 0.2, 0.4 and 0.6 mm / rev and the moisture content 0%, 17% and 67% would be produce a level surface roughness between N7 to N11. The smallest surface roughness occurs in interaction feedrate 0.2 mm / rev with a moisture content 0% at 5.54 ?m, whereas the rate of degradation surface roughness occurs interaction feedrate 0.6 mm / rev with moisture content 67% at 16.10 ?m . The surface appearanceof 3 axis CNC millingproceses a fuzzy grain, loosened grains, chipped grains and chip mark.

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